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A unique network arch bridge with free-standing arches was designed to carry the 2nd Avenue traffic over the interstate (I) 94 in Detroit, Michigan, USA. This 265 ft long, 96.5 ft wide, and 18-degree skew bridge consists of two network arches connected to posttensioned tie girders and end diaphragms. The arches are held in-plane by concrete knuckles located at each corner of the posttensioned tie girders. The Michigan Department of Transportation (MDOT) specifications require a high slump concrete mix with a very high per-centage of ground granulated blast furnace slag (GGBFS) and class F fly ash to control the heat of hydration for developing a crack-free concrete components necessary for a durable structure. The construction of this bridge utilizes accelerated bridge construction (ABC) techniques such as self-propelled modular transporters (SPMTs) and sliding. Also, the plan is to construct the skeletal …